TM-5-4210-249-13-P-1

TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 1 OF 4

TM-5-4210-249-13-P-1 - Page 754 of 1188

TM 5-4210-249-13&P-1

0104-46

DRAFT

0104

TFFT02886

Step 69.

Disconnect bumper turret wire harness bumper turret junction box connector.

Check for

continuity across bumper turret junction box position sensor ground wire (blue) from

bumper turret junction box connector, terminal 6 to bumper turret junction box 9-pin

terminal strip, terminal 5.

If there is no continuity, repair bumper turret junction box position sensor

ground wire in bumper turret junction box wire harness if repairable

(TM 9-2320-325-14&P), or replace bumper turret junction box wire

harness (WP 0573).

TFFT02887

Step 70.

Remove cab instrument panel E (WP 0311).

Disconnect bumper turret wire harness

bumper turret control connector.

With a test lead set, check for continuity across

bumper turret wire harness position sensor ground wire (blue) from bumper turret wire

harness bumper turret control connector, terminal 13 to bumper turret wire harness

bumper turret junction box connector, terminal 6.

a.

If there is continuity, replace bumper turret control (WP 0570).

b.

If there is no continuity, repair bumper turret wire harness position

sensor ground wire in bumper turret wire harness if repairable

(TM 9-2320-325-14&P), or replace bumper turret wire

harness (WP 0437).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION